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Finding the Fourth Proportional to 346,492.50, 478,159.68 and 187,516.50

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Solution

The fourth proportional to 346,492.50, 478,159.68 and 187,516.50 is: 258,772.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,492.50 : 478,159.68 = 187,516.50 : x
  2. Step 2: Convert to fraction form
    346,492.50/478,159.68 = 187,516.50/x
  3. Step 3: Cross multiply
    346,492.50x = 478,159.68 × 187,516.50
  4. Step 4: Simplify right side
    346,492.50x = 89,662,829,634.72
  5. Step 5: Solve for x
    x = 89,662,829,634.72/346,492.50
  6. Step 6: Final answer
    x = 258,772.79

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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.