Home / 216,931.84-299,394.08-121,458.32

Finding the Fourth Proportional to 216,931.84, 299,394.08 and 121,458.32

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Solution

The fourth proportional to 216,931.84, 299,394.08 and 121,458.32 is: 167,628.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,931.84 : 299,394.08 = 121,458.32 : x
  2. Step 2: Convert to fraction form
    216,931.84/299,394.08 = 121,458.32/x
  3. Step 3: Cross multiply
    216,931.84x = 299,394.08 × 121,458.32
  4. Step 4: Simplify right side
    216,931.84x = 36,363,901,974.75
  5. Step 5: Solve for x
    x = 36,363,901,974.75/216,931.84
  6. Step 6: Final answer
    x = 167,628.24

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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.