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Finding the Fourth Proportional to 424,157.22, 636,068.43 and 171,390.06

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Solution

The fourth proportional to 424,157.22, 636,068.43 and 171,390.06 is: 257,017.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,157.22 : 636,068.43 = 171,390.06 : x
  2. Step 2: Convert to fraction form
    424,157.22/636,068.43 = 171,390.06/x
  3. Step 3: Cross multiply
    424,157.22x = 636,068.43 × 171,390.06
  4. Step 4: Simplify right side
    424,157.22x = 109,015,806,381.81
  5. Step 5: Solve for x
    x = 109,015,806,381.81/424,157.22
  6. Step 6: Final answer
    x = 257,017.45

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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.