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Finding the Fourth Proportional to 438,047.06, 656,824.55 and 138,603.02

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Solution

The fourth proportional to 438,047.06, 656,824.55 and 138,603.02 is: 207,826.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,047.06 : 656,824.55 = 138,603.02 : x
  2. Step 2: Convert to fraction form
    438,047.06/656,824.55 = 138,603.02/x
  3. Step 3: Cross multiply
    438,047.06x = 656,824.55 × 138,603.02
  4. Step 4: Simplify right side
    438,047.06x = 91,037,862,263.00
  5. Step 5: Solve for x
    x = 91,037,862,263.00/438,047.06
  6. Step 6: Final answer
    x = 207,826.67

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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.