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Finding the Fourth Proportional to 472,619.04, 708,807.60 and 140,117.28

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Solution

The fourth proportional to 472,619.04, 708,807.60 and 140,117.28 is: 210,140.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,619.04 : 708,807.60 = 140,117.28 : x
  2. Step 2: Convert to fraction form
    472,619.04/708,807.60 = 140,117.28/x
  3. Step 3: Cross multiply
    472,619.04x = 708,807.60 × 140,117.28
  4. Step 4: Simplify right side
    472,619.04x = 99,316,192,955.33
  5. Step 5: Solve for x
    x = 99,316,192,955.33/472,619.04
  6. Step 6: Final answer
    x = 210,140.06

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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.