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Finding the Fourth Proportional to 153,220.80, 229,831.20 and 118,228.80

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Solution

The fourth proportional to 153,220.80, 229,831.20 and 118,228.80 is: 177,343.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,220.80 : 229,831.20 = 118,228.80 : x
  2. Step 2: Convert to fraction form
    153,220.80/229,831.20 = 118,228.80/x
  3. Step 3: Cross multiply
    153,220.80x = 229,831.20 × 118,228.80
  4. Step 4: Simplify right side
    153,220.80x = 27,172,666,978.56
  5. Step 5: Solve for x
    x = 27,172,666,978.56/153,220.80
  6. Step 6: Final answer
    x = 177,343.20

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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.