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Finding the Fourth Proportional to 423,231.52, 634,895.46 and 153,486.76

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Solution

The fourth proportional to 423,231.52, 634,895.46 and 153,486.76 is: 230,247.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,231.52 : 634,895.46 = 153,486.76 : x
  2. Step 2: Convert to fraction form
    423,231.52/634,895.46 = 153,486.76/x
  3. Step 3: Cross multiply
    423,231.52x = 634,895.46 × 153,486.76
  4. Step 4: Simplify right side
    423,231.52x = 97,448,047,094.11
  5. Step 5: Solve for x
    x = 97,448,047,094.11/423,231.52
  6. Step 6: Final answer
    x = 230,247.61

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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.