Home / 287,864,194.60-431,796,291.90-142,320,219.40

Finding the Fourth Proportional to 287,864,194.60, 431,796,291.90 and 142,320,219.40

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Solution

The fourth proportional to 287,864,194.60, 431,796,291.90 and 142,320,219.40 is: 213,480,329.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,864,194.60 : 431,796,291.90 = 142,320,219.40 : x
  2. Step 2: Convert to fraction form
    287,864,194.60/431,796,291.90 = 142,320,219.40/x
  3. Step 3: Cross multiply
    287,864,194.60x = 431,796,291.90 × 142,320,219.40
  4. Step 4: Simplify right side
    287,864,194.60x = 61,453,342,999,314,440
  5. Step 5: Solve for x
    x = 61,453,342,999,314,440/287,864,194.60
  6. Step 6: Final answer
    x = 213,480,329.10

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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.