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Finding the Fourth Proportional to 144,838.40, 217,257.60 and 39,657.20

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Solution

The fourth proportional to 144,838.40, 217,257.60 and 39,657.20 is: 59,485.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,838.40 : 217,257.60 = 39,657.20 : x
  2. Step 2: Convert to fraction form
    144,838.40/217,257.60 = 39,657.20/x
  3. Step 3: Cross multiply
    144,838.40x = 217,257.60 × 39,657.20
  4. Step 4: Simplify right side
    144,838.40x = 8,615,828,094.72
  5. Step 5: Solve for x
    x = 8,615,828,094.72/144,838.40
  6. Step 6: Final answer
    x = 59,485.80

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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.