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Finding the Fourth Proportional to 171,381.20, 257,071.80 and 153,010.40

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Solution

The fourth proportional to 171,381.20, 257,071.80 and 153,010.40 is: 229,515.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,381.20 : 257,071.80 = 153,010.40 : x
  2. Step 2: Convert to fraction form
    171,381.20/257,071.80 = 153,010.40/x
  3. Step 3: Cross multiply
    171,381.20x = 257,071.80 × 153,010.40
  4. Step 4: Simplify right side
    171,381.20x = 39,334,658,946.72
  5. Step 5: Solve for x
    x = 39,334,658,946.72/171,381.20
  6. Step 6: Final answer
    x = 229,515.60

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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.