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Finding the Fourth Proportional to 398,013.77, 549,259.04 and 216,725.65

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Solution

The fourth proportional to 398,013.77, 549,259.04 and 216,725.65 is: 299,081.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,013.77 : 549,259.04 = 216,725.65 : x
  2. Step 2: Convert to fraction form
    398,013.77/549,259.04 = 216,725.65/x
  3. Step 3: Cross multiply
    398,013.77x = 549,259.04 × 216,725.65
  4. Step 4: Simplify right side
    398,013.77x = 119,038,521,631.04
  5. Step 5: Solve for x
    x = 119,038,521,631.04/398,013.77
  6. Step 6: Final answer
    x = 299,081.41

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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.