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Finding the Fourth Proportional to 253,478.77, 349,801.01 and 157,985.38

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Solution

The fourth proportional to 253,478.77, 349,801.01 and 157,985.38 is: 218,020.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,478.77 : 349,801.01 = 157,985.38 : x
  2. Step 2: Convert to fraction form
    253,478.77/349,801.01 = 157,985.38/x
  3. Step 3: Cross multiply
    253,478.77x = 349,801.01 × 157,985.38
  4. Step 4: Simplify right side
    253,478.77x = 55,263,445,489.23
  5. Step 5: Solve for x
    x = 55,263,445,489.23/253,478.77
  6. Step 6: Final answer
    x = 218,020.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.