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Finding the Fourth Proportional to 423,230.52, 634,893.96 and 153,485.76

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Solution

The fourth proportional to 423,230.52, 634,893.96 and 153,485.76 is: 230,246.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,230.52 : 634,893.96 = 153,485.76 : x
  2. Step 2: Convert to fraction form
    423,230.52/634,893.96 = 153,485.76/x
  3. Step 3: Cross multiply
    423,230.52x = 634,893.96 × 153,485.76
  4. Step 4: Simplify right side
    423,230.52x = 97,447,181,970.01
  5. Step 5: Solve for x
    x = 97,447,181,970.01/423,230.52
  6. Step 6: Final answer
    x = 230,246.11

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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.