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Finding the Fourth Proportional to 145,328.40, 217,992.60 and 101,005.20

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Solution

The fourth proportional to 145,328.40, 217,992.60 and 101,005.20 is: 151,507.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,328.40 : 217,992.60 = 101,005.20 : x
  2. Step 2: Convert to fraction form
    145,328.40/217,992.60 = 101,005.20/x
  3. Step 3: Cross multiply
    145,328.40x = 217,992.60 × 101,005.20
  4. Step 4: Simplify right side
    145,328.40x = 22,018,386,161.52
  5. Step 5: Solve for x
    x = 22,018,386,161.52/145,328.40
  6. Step 6: Final answer
    x = 151,507.80

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1.5x scale

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.