Home / 280,531.72-420,801.18-93,543.16

Finding the Fourth Proportional to 280,531.72, 420,801.18 and 93,543.16

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Solution

The fourth proportional to 280,531.72, 420,801.18 and 93,543.16 is: 140,315.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,531.72 : 420,801.18 = 93,543.16 : x
  2. Step 2: Convert to fraction form
    280,531.72/420,801.18 = 93,543.16/x
  3. Step 3: Cross multiply
    280,531.72x = 420,801.18 × 93,543.16
  4. Step 4: Simplify right side
    280,531.72x = 39,363,072,108.93
  5. Step 5: Solve for x
    x = 39,363,072,108.93/280,531.72
  6. Step 6: Final answer
    x = 140,315.94

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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.