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Finding the Fourth Proportional to 347,019.90, 478,888.76 and 201,860.52

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Solution

The fourth proportional to 347,019.90, 478,888.76 and 201,860.52 is: 278,568.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,019.90 : 478,888.76 = 201,860.52 : x
  2. Step 2: Convert to fraction form
    347,019.90/478,888.76 = 201,860.52/x
  3. Step 3: Cross multiply
    347,019.90x = 478,888.76 × 201,860.52
  4. Step 4: Simplify right side
    347,019.90x = 96,668,733,106.45
  5. Step 5: Solve for x
    x = 96,668,733,106.45/347,019.90
  6. Step 6: Final answer
    x = 278,568.27

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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.