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Finding the Fourth Proportional to 402,003.30, 602,486.55 and 191,187.30

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Solution

The fourth proportional to 402,003.30, 602,486.55 and 191,187.30 is: 286,534.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,003.30 : 602,486.55 = 191,187.30 : x
  2. Step 2: Convert to fraction form
    402,003.30/602,486.55 = 191,187.30/x
  3. Step 3: Cross multiply
    402,003.30x = 602,486.55 × 191,187.30
  4. Step 4: Simplify right side
    402,003.30x = 115,187,776,780.82
  5. Step 5: Solve for x
    x = 115,187,776,780.82/402,003.30
  6. Step 6: Final answer
    x = 286,534.41

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1.5x scale

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.