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Finding the Fourth Proportional to 346,579, 478,279.02 and 187,603

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Solution

The fourth proportional to 346,579, 478,279.02 and 187,603 is: 258,892.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,579 : 478,279.02 = 187,603 : x
  2. Step 2: Convert to fraction form
    346,579/478,279.02 = 187,603/x
  3. Step 3: Cross multiply
    346,579x = 478,279.02 × 187,603
  4. Step 4: Simplify right side
    346,579x = 89,726,578,989.06
  5. Step 5: Solve for x
    x = 89,726,578,989.06/346,579
  6. Step 6: Final answer
    x = 258,892.14

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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.