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Finding the Fourth Proportional to 347,018.40, 520,527.60 and 169,639.20

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Solution

The fourth proportional to 347,018.40, 520,527.60 and 169,639.20 is: 254,458.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,018.40 : 520,527.60 = 169,639.20 : x
  2. Step 2: Convert to fraction form
    347,018.40/520,527.60 = 169,639.20/x
  3. Step 3: Cross multiply
    347,018.40x = 520,527.60 × 169,639.20
  4. Step 4: Simplify right side
    347,018.40x = 88,301,885,641.92
  5. Step 5: Solve for x
    x = 88,301,885,641.92/347,018.40
  6. Step 6: Final answer
    x = 254,458.80

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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.