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Finding the Fourth Proportional to 346,548, 478,237.68 and 187,572

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Solution

The fourth proportional to 346,548, 478,237.68 and 187,572 is: 258,850.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,548 : 478,237.68 = 187,572 : x
  2. Step 2: Convert to fraction form
    346,548/478,237.68 = 187,572/x
  3. Step 3: Cross multiply
    346,548x = 478,237.68 × 187,572
  4. Step 4: Simplify right side
    346,548x = 89,703,998,112.96
  5. Step 5: Solve for x
    x = 89,703,998,112.96/346,548
  6. Step 6: Final answer
    x = 258,850.14

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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.