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Finding the Fourth Proportional to 251,672, 377,566.40 and 85,460.16

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Solution

The fourth proportional to 251,672, 377,566.40 and 85,460.16 is: 128,210.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,672 : 377,566.40 = 85,460.16 : x
  2. Step 2: Convert to fraction form
    251,672/377,566.40 = 85,460.16/x
  3. Step 3: Cross multiply
    251,672x = 377,566.40 × 85,460.16
  4. Step 4: Simplify right side
    251,672x = 32,266,884,954.62
  5. Step 5: Solve for x
    x = 32,266,884,954.62/251,672
  6. Step 6: Final answer
    x = 128,210.07

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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.