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Finding the Fourth Proportional to 359,416.40, 538,865.40 and 201,693.20

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Solution

The fourth proportional to 359,416.40, 538,865.40 and 201,693.20 is: 302,394.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,416.40 : 538,865.40 = 201,693.20 : x
  2. Step 2: Convert to fraction form
    359,416.40/538,865.40 = 201,693.20/x
  3. Step 3: Cross multiply
    359,416.40x = 538,865.40 × 201,693.20
  4. Step 4: Simplify right side
    359,416.40x = 108,685,486,895.28
  5. Step 5: Solve for x
    x = 108,685,486,895.28/359,416.40
  6. Step 6: Final answer
    x = 302,394.35

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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.