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Finding the Fourth Proportional to 357,001.81, 535,503.97 and 90,762.36

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Solution

The fourth proportional to 357,001.81, 535,503.97 and 90,762.36 is: 136,143.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,001.81 : 535,503.97 = 90,762.36 : x
  2. Step 2: Convert to fraction form
    357,001.81/535,503.97 = 90,762.36/x
  3. Step 3: Cross multiply
    357,001.81x = 535,503.97 × 90,762.36
  4. Step 4: Simplify right side
    357,001.81x = 48,603,602,211.88
  5. Step 5: Solve for x
    x = 48,603,602,211.88/357,001.81
  6. Step 6: Final answer
    x = 136,143.85

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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.