Home / 216,968.80-299,382.40-121,479.52

Finding the Fourth Proportional to 216,968.80, 299,382.40 and 121,479.52

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Solution

The fourth proportional to 216,968.80, 299,382.40 and 121,479.52 is: 167,622.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,968.80 : 299,382.40 = 121,479.52 : x
  2. Step 2: Convert to fraction form
    216,968.80/299,382.40 = 121,479.52/x
  3. Step 3: Cross multiply
    216,968.80x = 299,382.40 × 121,479.52
  4. Step 4: Simplify right side
    216,968.80x = 36,368,830,248.45
  5. Step 5: Solve for x
    x = 36,368,830,248.45/216,968.80
  6. Step 6: Final answer
    x = 167,622.40

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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.