Home / 324,915.15-487,612.19-154,137.40

Finding the Fourth Proportional to 324,915.15, 487,612.19 and 154,137.40

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Solution

The fourth proportional to 324,915.15, 487,612.19 and 154,137.40 is: 231,319.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,915.15 : 487,612.19 = 154,137.40 : x
  2. Step 2: Convert to fraction form
    324,915.15/487,612.19 = 154,137.40/x
  3. Step 3: Cross multiply
    324,915.15x = 487,612.19 × 154,137.40
  4. Step 4: Simplify right side
    324,915.15x = 75,159,276,169.76
  5. Step 5: Solve for x
    x = 75,159,276,169.76/324,915.15
  6. Step 6: Final answer
    x = 231,319.70

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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.