Home / 389,509.20-584,220.60-109,054.80

Finding the Fourth Proportional to 389,509.20, 584,220.60 and 109,054.80

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Solution

The fourth proportional to 389,509.20, 584,220.60 and 109,054.80 is: 163,570.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,509.20 : 584,220.60 = 109,054.80 : x
  2. Step 2: Convert to fraction form
    389,509.20/584,220.60 = 109,054.80/x
  3. Step 3: Cross multiply
    389,509.20x = 584,220.60 × 109,054.80
  4. Step 4: Simplify right side
    389,509.20x = 63,712,060,688.88
  5. Step 5: Solve for x
    x = 63,712,060,688.88/389,509.20
  6. Step 6: Final answer
    x = 163,570.10

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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.