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Finding the Fourth Proportional to 347,801.60, 521,702.40 and 292,689.20

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Solution

The fourth proportional to 347,801.60, 521,702.40 and 292,689.20 is: 439,033.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,801.60 : 521,702.40 = 292,689.20 : x
  2. Step 2: Convert to fraction form
    347,801.60/521,702.40 = 292,689.20/x
  3. Step 3: Cross multiply
    347,801.60x = 521,702.40 × 292,689.20
  4. Step 4: Simplify right side
    347,801.60x = 152,696,658,094.08
  5. Step 5: Solve for x
    x = 152,696,658,094.08/347,801.60
  6. Step 6: Final answer
    x = 439,033.80

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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.