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Finding the Fourth Proportional to 249,609.60, 345,124.80 and 218,116.80

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Solution

The fourth proportional to 249,609.60, 345,124.80 and 218,116.80 is: 301,581.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,609.60 : 345,124.80 = 218,116.80 : x
  2. Step 2: Convert to fraction form
    249,609.60/345,124.80 = 218,116.80/x
  3. Step 3: Cross multiply
    249,609.60x = 345,124.80 × 218,116.80
  4. Step 4: Simplify right side
    249,609.60x = 75,277,516,976.64
  5. Step 5: Solve for x
    x = 75,277,516,976.64/249,609.60
  6. Step 6: Final answer
    x = 301,581.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.