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Finding the Fourth Proportional to 210,689.60, 315,573.60 and 163,572.80

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Solution

The fourth proportional to 210,689.60, 315,573.60 and 163,572.80 is: 245,001.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,689.60 : 315,573.60 = 163,572.80 : x
  2. Step 2: Convert to fraction form
    210,689.60/315,573.60 = 163,572.80/x
  3. Step 3: Cross multiply
    210,689.60x = 315,573.60 × 163,572.80
  4. Step 4: Simplify right side
    210,689.60x = 51,619,257,358.08
  5. Step 5: Solve for x
    x = 51,619,257,358.08/210,689.60
  6. Step 6: Final answer
    x = 245,001.45

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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.