Home / 218,632.08-301,787.78-128,017.18

Finding the Fourth Proportional to 218,632.08, 301,787.78 and 128,017.18

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Solution

The fourth proportional to 218,632.08, 301,787.78 and 128,017.18 is: 176,707.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,632.08 : 301,787.78 = 128,017.18 : x
  2. Step 2: Convert to fraction form
    218,632.08/301,787.78 = 128,017.18/x
  3. Step 3: Cross multiply
    218,632.08x = 301,787.78 × 128,017.18
  4. Step 4: Simplify right side
    218,632.08x = 38,634,018,593.65
  5. Step 5: Solve for x
    x = 38,634,018,593.65/218,632.08
  6. Step 6: Final answer
    x = 176,707.91

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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.