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Finding the Fourth Proportional to 356,999.64, 535,502.93 and 90,760.16

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Solution

The fourth proportional to 356,999.64, 535,502.93 and 90,760.16 is: 136,141.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,999.64 : 535,502.93 = 90,760.16 : x
  2. Step 2: Convert to fraction form
    356,999.64/535,502.93 = 90,760.16/x
  3. Step 3: Cross multiply
    356,999.64x = 535,502.93 × 90,760.16
  4. Step 4: Simplify right side
    356,999.64x = 48,602,330,264.98
  5. Step 5: Solve for x
    x = 48,602,330,264.98/356,999.64
  6. Step 6: Final answer
    x = 136,141.12

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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.