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Finding the Fourth Proportional to 405,246.60, 607,498.20 and 155,740.68

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Solution

The fourth proportional to 405,246.60, 607,498.20 and 155,740.68 is: 233,468.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,246.60 : 607,498.20 = 155,740.68 : x
  2. Step 2: Convert to fraction form
    405,246.60/607,498.20 = 155,740.68/x
  3. Step 3: Cross multiply
    405,246.60x = 607,498.20 × 155,740.68
  4. Step 4: Simplify right side
    405,246.60x = 94,612,182,766.78
  5. Step 5: Solve for x
    x = 94,612,182,766.78/405,246.60
  6. Step 6: Final answer
    x = 233,468.17

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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.