Home / 286,362.20-395,184.72-157,306.12

Finding the Fourth Proportional to 286,362.20, 395,184.72 and 157,306.12

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Solution

The fourth proportional to 286,362.20, 395,184.72 and 157,306.12 is: 217,085.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,362.20 : 395,184.72 = 157,306.12 : x
  2. Step 2: Convert to fraction form
    286,362.20/395,184.72 = 157,306.12/x
  3. Step 3: Cross multiply
    286,362.20x = 395,184.72 × 157,306.12
  4. Step 4: Simplify right side
    286,362.20x = 62,164,974,588.42
  5. Step 5: Solve for x
    x = 62,164,974,588.42/286,362.20
  6. Step 6: Final answer
    x = 217,085.13

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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.