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Finding the Fourth Proportional to 302,019.60, 453,018.90 and 77,381.90

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Solution

The fourth proportional to 302,019.60, 453,018.90 and 77,381.90 is: 116,070.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,019.60 : 453,018.90 = 77,381.90 : x
  2. Step 2: Convert to fraction form
    302,019.60/453,018.90 = 77,381.90/x
  3. Step 3: Cross multiply
    302,019.60x = 453,018.90 × 77,381.90
  4. Step 4: Simplify right side
    302,019.60x = 35,055,463,217.91
  5. Step 5: Solve for x
    x = 35,055,463,217.91/302,019.60
  6. Step 6: Final answer
    x = 116,070.16

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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.