Home / 389,430.72-583,637.04-199,730.88

Finding the Fourth Proportional to 389,430.72, 583,637.04 and 199,730.88

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Solution

The fourth proportional to 389,430.72, 583,637.04 and 199,730.88 is: 299,335.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,430.72 : 583,637.04 = 199,730.88 : x
  2. Step 2: Convert to fraction form
    389,430.72/583,637.04 = 199,730.88/x
  3. Step 3: Cross multiply
    389,430.72x = 583,637.04 × 199,730.88
  4. Step 4: Simplify right side
    389,430.72x = 116,570,339,599.80
  5. Step 5: Solve for x
    x = 116,570,339,599.80/389,430.72
  6. Step 6: Final answer
    x = 299,335.24

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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.