Home / 287,700,810.30-431,551,215.45-165,256,803.90

Finding the Fourth Proportional to 287,700,810.30, 431,551,215.45 and 165,256,803.90

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Solution

The fourth proportional to 287,700,810.30, 431,551,215.45 and 165,256,803.90 is: 247,885,205.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,700,810.30 : 431,551,215.45 = 165,256,803.90 : x
  2. Step 2: Convert to fraction form
    287,700,810.30/431,551,215.45 = 165,256,803.90/x
  3. Step 3: Cross multiply
    287,700,810.30x = 431,551,215.45 × 165,256,803.90
  4. Step 4: Simplify right side
    287,700,810.30x = 71,316,774,584,427,304
  5. Step 5: Solve for x
    x = 71,316,774,584,427,304/287,700,810.30
  6. Step 6: Final answer
    x = 247,885,205.85

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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.