Home / 380,023.20-569,420.40-239,530.40

Finding the Fourth Proportional to 380,023.20, 569,420.40 and 239,530.40

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Solution

The fourth proportional to 380,023.20, 569,420.40 and 239,530.40 is: 358,908.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,023.20 : 569,420.40 = 239,530.40 : x
  2. Step 2: Convert to fraction form
    380,023.20/569,420.40 = 239,530.40/x
  3. Step 3: Cross multiply
    380,023.20x = 569,420.40 × 239,530.40
  4. Step 4: Simplify right side
    380,023.20x = 136,393,496,180.16
  5. Step 5: Solve for x
    x = 136,393,496,180.16/380,023.20
  6. Step 6: Final answer
    x = 358,908.34

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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.