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Finding the Fourth Proportional to 379,402.72, 565,646.12 and 369,708.64

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Solution

The fourth proportional to 379,402.72, 565,646.12 and 369,708.64 is: 551,193.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,402.72 : 565,646.12 = 369,708.64 : x
  2. Step 2: Convert to fraction form
    379,402.72/565,646.12 = 369,708.64/x
  3. Step 3: Cross multiply
    379,402.72x = 565,646.12 × 369,708.64
  4. Step 4: Simplify right side
    379,402.72x = 209,124,257,746.48
  5. Step 5: Solve for x
    x = 209,124,257,746.48/379,402.72
  6. Step 6: Final answer
    x = 551,193.35

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.