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Finding the Fourth Proportional to 346,686.80, 478,650.12 and 283,177.04

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Solution

The fourth proportional to 346,686.80, 478,650.12 and 283,177.04 is: 390,965.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,686.80 : 478,650.12 = 283,177.04 : x
  2. Step 2: Convert to fraction form
    346,686.80/478,650.12 = 283,177.04/x
  3. Step 3: Cross multiply
    346,686.80x = 478,650.12 × 283,177.04
  4. Step 4: Simplify right side
    346,686.80x = 135,542,724,177.25
  5. Step 5: Solve for x
    x = 135,542,724,177.25/346,686.80
  6. Step 6: Final answer
    x = 390,965.92

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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.