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Finding the Fourth Proportional to 247,001.40, 370,657.98 and 128,755.80

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Solution

The fourth proportional to 247,001.40, 370,657.98 and 128,755.80 is: 193,214.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,001.40 : 370,657.98 = 128,755.80 : x
  2. Step 2: Convert to fraction form
    247,001.40/370,657.98 = 128,755.80/x
  3. Step 3: Cross multiply
    247,001.40x = 370,657.98 × 128,755.80
  4. Step 4: Simplify right side
    247,001.40x = 47,724,364,741.28
  5. Step 5: Solve for x
    x = 47,724,364,741.28/247,001.40
  6. Step 6: Final answer
    x = 193,214.96

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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.