Home / 287,605,145.40-431,407,718.10-239,775,455.40

Finding the Fourth Proportional to 287,605,145.40, 431,407,718.10 and 239,775,455.40

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Solution

The fourth proportional to 287,605,145.40, 431,407,718.10 and 239,775,455.40 is: 359,663,183.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,605,145.40 : 431,407,718.10 = 239,775,455.40 : x
  2. Step 2: Convert to fraction form
    287,605,145.40/431,407,718.10 = 239,775,455.40/x
  3. Step 3: Cross multiply
    287,605,145.40x = 431,407,718.10 × 239,775,455.40
  4. Step 4: Simplify right side
    287,605,145.40x = 103,440,982,070,502,336
  5. Step 5: Solve for x
    x = 103,440,982,070,502,336/287,605,145.40
  6. Step 6: Final answer
    x = 359,663,183.10

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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.