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Finding the Fourth Proportional to 157,643.90, 236,465.85 and 155,570.30

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Solution

The fourth proportional to 157,643.90, 236,465.85 and 155,570.30 is: 233,355.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,643.90 : 236,465.85 = 155,570.30 : x
  2. Step 2: Convert to fraction form
    157,643.90/236,465.85 = 155,570.30/x
  3. Step 3: Cross multiply
    157,643.90x = 236,465.85 × 155,570.30
  4. Step 4: Simplify right side
    157,643.90x = 36,787,063,224.26
  5. Step 5: Solve for x
    x = 36,787,063,224.26/157,643.90
  6. Step 6: Final answer
    x = 233,355.45

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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.