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Finding the Fourth Proportional to 152,406.60, 228,221.10 and 121,302.60

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Solution

The fourth proportional to 152,406.60, 228,221.10 and 121,302.60 is: 181,644.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,406.60 : 228,221.10 = 121,302.60 : x
  2. Step 2: Convert to fraction form
    152,406.60/228,221.10 = 121,302.60/x
  3. Step 3: Cross multiply
    152,406.60x = 228,221.10 × 121,302.60
  4. Step 4: Simplify right side
    152,406.60x = 27,683,812,804.86
  5. Step 5: Solve for x
    x = 27,683,812,804.86/152,406.60
  6. Step 6: Final answer
    x = 181,644.45

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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.