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Finding the Fourth Proportional to 359,276.80, 538,915.20 and 303,980.80

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Solution

The fourth proportional to 359,276.80, 538,915.20 and 303,980.80 is: 455,971.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,276.80 : 538,915.20 = 303,980.80 : x
  2. Step 2: Convert to fraction form
    359,276.80/538,915.20 = 303,980.80/x
  3. Step 3: Cross multiply
    359,276.80x = 538,915.20 × 303,980.80
  4. Step 4: Simplify right side
    359,276.80x = 163,819,873,628.16
  5. Step 5: Solve for x
    x = 163,819,873,628.16/359,276.80
  6. Step 6: Final answer
    x = 455,971.20

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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.