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Finding the Fourth Proportional to 318,339.63, 439,300.05 and 180,543.84

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Solution

The fourth proportional to 318,339.63, 439,300.05 and 180,543.84 is: 249,145.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,339.63 : 439,300.05 = 180,543.84 : x
  2. Step 2: Convert to fraction form
    318,339.63/439,300.05 = 180,543.84/x
  3. Step 3: Cross multiply
    318,339.63x = 439,300.05 × 180,543.84
  4. Step 4: Simplify right side
    318,339.63x = 79,312,917,939.19
  5. Step 5: Solve for x
    x = 79,312,917,939.19/318,339.63
  6. Step 6: Final answer
    x = 249,145.60

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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.