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Finding the Fourth Proportional to 518,668.16, 778,133.44 and 144,690.88

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Solution

The fourth proportional to 518,668.16, 778,133.44 and 144,690.88 is: 217,072.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,668.16 : 778,133.44 = 144,690.88 : x
  2. Step 2: Convert to fraction form
    518,668.16/778,133.44 = 144,690.88/x
  3. Step 3: Cross multiply
    518,668.16x = 778,133.44 × 144,690.88
  4. Step 4: Simplify right side
    518,668.16x = 112,588,812,191.03
  5. Step 5: Solve for x
    x = 112,588,812,191.03/518,668.16
  6. Step 6: Final answer
    x = 217,072.92

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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.