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Finding the Fourth Proportional to 210,915.72, 291,062.93 and 114,119.28

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Solution

The fourth proportional to 210,915.72, 291,062.93 and 114,119.28 is: 157,484.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,915.72 : 291,062.93 = 114,119.28 : x
  2. Step 2: Convert to fraction form
    210,915.72/291,062.93 = 114,119.28/x
  3. Step 3: Cross multiply
    210,915.72x = 291,062.93 × 114,119.28
  4. Step 4: Simplify right side
    210,915.72x = 33,215,891,435.69
  5. Step 5: Solve for x
    x = 33,215,891,435.69/210,915.72
  6. Step 6: Final answer
    x = 157,484.19

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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.