Home / 398,056.47-549,328.40-216,776.04

Finding the Fourth Proportional to 398,056.47, 549,328.40 and 216,776.04

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Solution

The fourth proportional to 398,056.47, 549,328.40 and 216,776.04 is: 299,156.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,056.47 : 549,328.40 = 216,776.04 : x
  2. Step 2: Convert to fraction form
    398,056.47/549,328.40 = 216,776.04/x
  3. Step 3: Cross multiply
    398,056.47x = 549,328.40 × 216,776.04
  4. Step 4: Simplify right side
    398,056.47x = 119,081,235,211.54
  5. Step 5: Solve for x
    x = 119,081,235,211.54/398,056.47
  6. Step 6: Final answer
    x = 299,156.64

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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.