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Finding the Fourth Proportional to 145,478.04, 218,217.08 and 45,653.64

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Solution

The fourth proportional to 145,478.04, 218,217.08 and 45,653.64 is: 68,480.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,478.04 : 218,217.08 = 45,653.64 : x
  2. Step 2: Convert to fraction form
    145,478.04/218,217.08 = 45,653.64/x
  3. Step 3: Cross multiply
    145,478.04x = 218,217.08 × 45,653.64
  4. Step 4: Simplify right side
    145,478.04x = 9,962,404,012.17
  5. Step 5: Solve for x
    x = 9,962,404,012.17/145,478.04
  6. Step 6: Final answer
    x = 68,480.47

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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.