Home / 221,389.60-305,425.20-144,927.40

Finding the Fourth Proportional to 221,389.60, 305,425.20 and 144,927.40

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Solution

The fourth proportional to 221,389.60, 305,425.20 and 144,927.40 is: 199,939.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,389.60 : 305,425.20 = 144,927.40 : x
  2. Step 2: Convert to fraction form
    221,389.60/305,425.20 = 144,927.40/x
  3. Step 3: Cross multiply
    221,389.60x = 305,425.20 × 144,927.40
  4. Step 4: Simplify right side
    221,389.60x = 44,264,480,130.48
  5. Step 5: Solve for x
    x = 44,264,480,130.48/221,389.60
  6. Step 6: Final answer
    x = 199,939.29

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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.