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Finding the Fourth Proportional to 518,613.30, 778,029.30 and 163,663.20

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Solution

The fourth proportional to 518,613.30, 778,029.30 and 163,663.20 is: 245,529.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,613.30 : 778,029.30 = 163,663.20 : x
  2. Step 2: Convert to fraction form
    518,613.30/778,029.30 = 163,663.20/x
  3. Step 3: Cross multiply
    518,613.30x = 778,029.30 × 163,663.20
  4. Step 4: Simplify right side
    518,613.30x = 127,334,764,931.76
  5. Step 5: Solve for x
    x = 127,334,764,931.76/518,613.30
  6. Step 6: Final answer
    x = 245,529.31

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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.