Home / 287,864,225.10-431,796,337.65-142,320,249.90

Finding the Fourth Proportional to 287,864,225.10, 431,796,337.65 and 142,320,249.90

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Solution

The fourth proportional to 287,864,225.10, 431,796,337.65 and 142,320,249.90 is: 213,480,374.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,864,225.10 : 431,796,337.65 = 142,320,249.90 : x
  2. Step 2: Convert to fraction form
    287,864,225.10/431,796,337.65 = 142,320,249.90/x
  3. Step 3: Cross multiply
    287,864,225.10x = 431,796,337.65 × 142,320,249.90
  4. Step 4: Simplify right side
    287,864,225.10x = 61,453,362,680,252,776
  5. Step 5: Solve for x
    x = 61,453,362,680,252,776/287,864,225.10
  6. Step 6: Final answer
    x = 213,480,374.85

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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.