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Finding the Fourth Proportional to 210,955.01, 291,117.90 and 115,461.69

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Solution

The fourth proportional to 210,955.01, 291,117.90 and 115,461.69 is: 159,337.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,955.01 : 291,117.90 = 115,461.69 : x
  2. Step 2: Convert to fraction form
    210,955.01/291,117.90 = 115,461.69/x
  3. Step 3: Cross multiply
    210,955.01x = 291,117.90 × 115,461.69
  4. Step 4: Simplify right side
    210,955.01x = 33,612,964,723.25
  5. Step 5: Solve for x
    x = 33,612,964,723.25/210,955.01
  6. Step 6: Final answer
    x = 159,337.13

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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.