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Finding the Fourth Proportional to 303,298.79, 455,001.68 and 103,572.36

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Solution

The fourth proportional to 303,298.79, 455,001.68 and 103,572.36 is: 155,376.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,298.79 : 455,001.68 = 103,572.36 : x
  2. Step 2: Convert to fraction form
    303,298.79/455,001.68 = 103,572.36/x
  3. Step 3: Cross multiply
    303,298.79x = 455,001.68 × 103,572.36
  4. Step 4: Simplify right side
    303,298.79x = 47,125,598,060.50
  5. Step 5: Solve for x
    x = 47,125,598,060.50/303,298.79
  6. Step 6: Final answer
    x = 155,376.81

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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.