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Finding the Fourth Proportional to 434,487.20, 651,698.40 and 181,702.40

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Solution

The fourth proportional to 434,487.20, 651,698.40 and 181,702.40 is: 272,540.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,487.20 : 651,698.40 = 181,702.40 : x
  2. Step 2: Convert to fraction form
    434,487.20/651,698.40 = 181,702.40/x
  3. Step 3: Cross multiply
    434,487.20x = 651,698.40 × 181,702.40
  4. Step 4: Simplify right side
    434,487.20x = 118,415,163,356.16
  5. Step 5: Solve for x
    x = 118,415,163,356.16/434,487.20
  6. Step 6: Final answer
    x = 272,540.05

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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.