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Finding the Fourth Proportional to 210,897.35, 291,038.29 and 115,404.02

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Solution

The fourth proportional to 210,897.35, 291,038.29 and 115,404.02 is: 159,257.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,897.35 : 291,038.29 = 115,404.02 : x
  2. Step 2: Convert to fraction form
    210,897.35/291,038.29 = 115,404.02/x
  3. Step 3: Cross multiply
    210,897.35x = 291,038.29 × 115,404.02
  4. Step 4: Simplify right side
    210,897.35x = 33,586,986,896.22
  5. Step 5: Solve for x
    x = 33,586,986,896.22/210,897.35
  6. Step 6: Final answer
    x = 159,257.51

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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.