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Finding the Fourth Proportional to 346,499, 478,168.66 and 187,523

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Solution

The fourth proportional to 346,499, 478,168.66 and 187,523 is: 258,781.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,499 : 478,168.66 = 187,523 : x
  2. Step 2: Convert to fraction form
    346,499/478,168.66 = 187,523/x
  3. Step 3: Cross multiply
    346,499x = 478,168.66 × 187,523
  4. Step 4: Simplify right side
    346,499x = 89,667,621,629.18
  5. Step 5: Solve for x
    x = 89,667,621,629.18/346,499
  6. Step 6: Final answer
    x = 258,781.76

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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.