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Finding the Fourth Proportional to 518,311.58, 715,253.90 and 291,952.22

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Solution

The fourth proportional to 518,311.58, 715,253.90 and 291,952.22 is: 402,885.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,311.58 : 715,253.90 = 291,952.22 : x
  2. Step 2: Convert to fraction form
    518,311.58/715,253.90 = 291,952.22/x
  3. Step 3: Cross multiply
    518,311.58x = 715,253.90 × 291,952.22
  4. Step 4: Simplify right side
    518,311.58x = 208,819,963,968.66
  5. Step 5: Solve for x
    x = 208,819,963,968.66/518,311.58
  6. Step 6: Final answer
    x = 402,885.01

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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.