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Finding the Fourth Proportional to 318,417.70, 439,411.62 and 175,169.20

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Solution

The fourth proportional to 318,417.70, 439,411.62 and 175,169.20 is: 241,730.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,417.70 : 439,411.62 = 175,169.20 : x
  2. Step 2: Convert to fraction form
    318,417.70/439,411.62 = 175,169.20/x
  3. Step 3: Cross multiply
    318,417.70x = 439,411.62 × 175,169.20
  4. Step 4: Simplify right side
    318,417.70x = 76,971,381,946.10
  5. Step 5: Solve for x
    x = 76,971,381,946.10/318,417.70
  6. Step 6: Final answer
    x = 241,730.85

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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.