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Finding the Fourth Proportional to 472,978.80, 709,905.60 and 236,491.20

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Solution

The fourth proportional to 472,978.80, 709,905.60 and 236,491.20 is: 354,955.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,978.80 : 709,905.60 = 236,491.20 : x
  2. Step 2: Convert to fraction form
    472,978.80/709,905.60 = 236,491.20/x
  3. Step 3: Cross multiply
    472,978.80x = 709,905.60 × 236,491.20
  4. Step 4: Simplify right side
    472,978.80x = 167,886,427,230.72
  5. Step 5: Solve for x
    x = 167,886,427,230.72/472,978.80
  6. Step 6: Final answer
    x = 354,955.50

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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.