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Finding the Fourth Proportional to 398,730.59, 549,830.19 and 262,590.65

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Solution

The fourth proportional to 398,730.59, 549,830.19 and 262,590.65 is: 362,099.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,730.59 : 549,830.19 = 262,590.65 : x
  2. Step 2: Convert to fraction form
    398,730.59/549,830.19 = 262,590.65/x
  3. Step 3: Cross multiply
    398,730.59x = 549,830.19 × 262,590.65
  4. Step 4: Simplify right side
    398,730.59x = 144,380,266,981.72
  5. Step 5: Solve for x
    x = 144,380,266,981.72/398,730.59
  6. Step 6: Final answer
    x = 362,099.80

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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.