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Finding the Fourth Proportional to 346,689.80, 478,654.26 and 283,180.04

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Solution

The fourth proportional to 346,689.80, 478,654.26 and 283,180.04 is: 390,970.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,689.80 : 478,654.26 = 283,180.04 : x
  2. Step 2: Convert to fraction form
    346,689.80/478,654.26 = 283,180.04/x
  3. Step 3: Cross multiply
    346,689.80x = 478,654.26 × 283,180.04
  4. Step 4: Simplify right side
    346,689.80x = 135,545,332,492.97
  5. Step 5: Solve for x
    x = 135,545,332,492.97/346,689.80
  6. Step 6: Final answer
    x = 390,970.06

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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.