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Finding the Fourth Proportional to 347,740.80, 520,444.80 and 305,750.40

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Solution

The fourth proportional to 347,740.80, 520,444.80 and 305,750.40 is: 457,600.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,740.80 : 520,444.80 = 305,750.40 : x
  2. Step 2: Convert to fraction form
    347,740.80/520,444.80 = 305,750.40/x
  3. Step 3: Cross multiply
    347,740.80x = 520,444.80 × 305,750.40
  4. Step 4: Simplify right side
    347,740.80x = 159,126,205,777.92
  5. Step 5: Solve for x
    x = 159,126,205,777.92/347,740.80
  6. Step 6: Final answer
    x = 457,600.05

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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.