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Finding the Fourth Proportional to 346,488.50, 478,154.13 and 187,512.50

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Solution

The fourth proportional to 346,488.50, 478,154.13 and 187,512.50 is: 258,767.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,488.50 : 478,154.13 = 187,512.50 : x
  2. Step 2: Convert to fraction form
    346,488.50/478,154.13 = 187,512.50/x
  3. Step 3: Cross multiply
    346,488.50x = 478,154.13 × 187,512.50
  4. Step 4: Simplify right side
    346,488.50x = 89,659,876,301.63
  5. Step 5: Solve for x
    x = 89,659,876,301.63/346,488.50
  6. Step 6: Final answer
    x = 258,767.25

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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.