Home / 319,437.20-478,771.80-132,352.40

Finding the Fourth Proportional to 319,437.20, 478,771.80 and 132,352.40

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Solution

The fourth proportional to 319,437.20, 478,771.80 and 132,352.40 is: 198,369.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,437.20 : 478,771.80 = 132,352.40 : x
  2. Step 2: Convert to fraction form
    319,437.20/478,771.80 = 132,352.40/x
  3. Step 3: Cross multiply
    319,437.20x = 478,771.80 × 132,352.40
  4. Step 4: Simplify right side
    319,437.20x = 63,366,596,782.32
  5. Step 5: Solve for x
    x = 63,366,596,782.32/319,437.20
  6. Step 6: Final answer
    x = 198,369.50

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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.