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Finding the Fourth Proportional to 478,916.70, 718,010.55 and 242,429.10

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Solution

The fourth proportional to 478,916.70, 718,010.55 and 242,429.10 is: 363,459.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,916.70 : 718,010.55 = 242,429.10 : x
  2. Step 2: Convert to fraction form
    478,916.70/718,010.55 = 242,429.10/x
  3. Step 3: Cross multiply
    478,916.70x = 718,010.55 × 242,429.10
  4. Step 4: Simplify right side
    478,916.70x = 174,066,651,427.01
  5. Step 5: Solve for x
    x = 174,066,651,427.01/478,916.70
  6. Step 6: Final answer
    x = 363,459.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.