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Finding the Fourth Proportional to 370,483.61, 555,726.78 and 90,000.86

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Solution

The fourth proportional to 370,483.61, 555,726.78 and 90,000.86 is: 135,001.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,483.61 : 555,726.78 = 90,000.86 : x
  2. Step 2: Convert to fraction form
    370,483.61/555,726.78 = 90,000.86/x
  3. Step 3: Cross multiply
    370,483.61x = 555,726.78 × 90,000.86
  4. Step 4: Simplify right side
    370,483.61x = 50,015,888,125.03
  5. Step 5: Solve for x
    x = 50,015,888,125.03/370,483.61
  6. Step 6: Final answer
    x = 135,001.62

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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.