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Finding the Fourth Proportional to 518,934.61, 716,135.20 and 301,191.42

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Solution

The fourth proportional to 518,934.61, 716,135.20 and 301,191.42 is: 415,647.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,934.61 : 716,135.20 = 301,191.42 : x
  2. Step 2: Convert to fraction form
    518,934.61/716,135.20 = 301,191.42/x
  3. Step 3: Cross multiply
    518,934.61x = 716,135.20 × 301,191.42
  4. Step 4: Simplify right side
    518,934.61x = 215,693,777,054.90
  5. Step 5: Solve for x
    x = 215,693,777,054.90/518,934.61
  6. Step 6: Final answer
    x = 415,647.32

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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.