Home / 287,864,221.60-431,796,332.40-142,320,246.40

Finding the Fourth Proportional to 287,864,221.60, 431,796,332.40 and 142,320,246.40

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Solution

The fourth proportional to 287,864,221.60, 431,796,332.40 and 142,320,246.40 is: 213,480,369.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,864,221.60 : 431,796,332.40 = 142,320,246.40 : x
  2. Step 2: Convert to fraction form
    287,864,221.60/431,796,332.40 = 142,320,246.40/x
  3. Step 3: Cross multiply
    287,864,221.60x = 431,796,332.40 × 142,320,246.40
  4. Step 4: Simplify right side
    287,864,221.60x = 61,453,360,421,784,304
  5. Step 5: Solve for x
    x = 61,453,360,421,784,304/287,864,221.60
  6. Step 6: Final answer
    x = 213,480,369.60

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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.