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Finding the Fourth Proportional to 284,302.04, 392,326.35 and 156,974.90

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Solution

The fourth proportional to 284,302.04, 392,326.35 and 156,974.90 is: 216,619.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,302.04 : 392,326.35 = 156,974.90 : x
  2. Step 2: Convert to fraction form
    284,302.04/392,326.35 = 156,974.90/x
  3. Step 3: Cross multiply
    284,302.04x = 392,326.35 × 156,974.90
  4. Step 4: Simplify right side
    284,302.04x = 61,585,389,558.62
  5. Step 5: Solve for x
    x = 61,585,389,558.62/284,302.04
  6. Step 6: Final answer
    x = 216,619.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.