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Finding the Fourth Proportional to 361,281.20, 497,430.59 and 306,725.47

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Solution

The fourth proportional to 361,281.20, 497,430.59 and 306,725.47 is: 422,315.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,281.20 : 497,430.59 = 306,725.47 : x
  2. Step 2: Convert to fraction form
    361,281.20/497,430.59 = 306,725.47/x
  3. Step 3: Cross multiply
    361,281.20x = 497,430.59 × 306,725.47
  4. Step 4: Simplify right side
    361,281.20x = 152,574,630,388.24
  5. Step 5: Solve for x
    x = 152,574,630,388.24/361,281.20
  6. Step 6: Final answer
    x = 422,315.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.