Home / 287,605,220.40-431,407,830.60-239,775,530.40

Finding the Fourth Proportional to 287,605,220.40, 431,407,830.60 and 239,775,530.40

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Solution

The fourth proportional to 287,605,220.40, 431,407,830.60 and 239,775,530.40 is: 359,663,295.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,605,220.40 : 431,407,830.60 = 239,775,530.40 : x
  2. Step 2: Convert to fraction form
    287,605,220.40/431,407,830.60 = 239,775,530.40/x
  3. Step 3: Cross multiply
    287,605,220.40x = 431,407,830.60 × 239,775,530.40
  4. Step 4: Simplify right side
    287,605,220.40x = 103,441,041,400,828,352
  5. Step 5: Solve for x
    x = 103,441,041,400,828,352/287,605,220.40
  6. Step 6: Final answer
    x = 359,663,295.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.