Home / 328,031.20-492,046.80-117,690.40

Finding the Fourth Proportional to 328,031.20, 492,046.80 and 117,690.40

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Solution

The fourth proportional to 328,031.20, 492,046.80 and 117,690.40 is: 176,535.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,031.20 : 492,046.80 = 117,690.40 : x
  2. Step 2: Convert to fraction form
    328,031.20/492,046.80 = 117,690.40/x
  3. Step 3: Cross multiply
    328,031.20x = 492,046.80 × 117,690.40
  4. Step 4: Simplify right side
    328,031.20x = 57,909,184,710.72
  5. Step 5: Solve for x
    x = 57,909,184,710.72/328,031.20
  6. Step 6: Final answer
    x = 176,535.60

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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.