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Finding the Fourth Proportional to 442,681.40, 663,147.30 and 242,643.80

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Solution

The fourth proportional to 442,681.40, 663,147.30 and 242,643.80 is: 363,486.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,681.40 : 663,147.30 = 242,643.80 : x
  2. Step 2: Convert to fraction form
    442,681.40/663,147.30 = 242,643.80/x
  3. Step 3: Cross multiply
    442,681.40x = 663,147.30 × 242,643.80
  4. Step 4: Simplify right side
    442,681.40x = 160,908,580,831.74
  5. Step 5: Solve for x
    x = 160,908,580,831.74/442,681.40
  6. Step 6: Final answer
    x = 363,486.20

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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.