Home / 399,184.16-549,938.40-278,106.44

Finding the Fourth Proportional to 399,184.16, 549,938.40 and 278,106.44

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Solution

The fourth proportional to 399,184.16, 549,938.40 and 278,106.44 is: 383,134.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,184.16 : 549,938.40 = 278,106.44 : x
  2. Step 2: Convert to fraction form
    399,184.16/549,938.40 = 278,106.44/x
  3. Step 3: Cross multiply
    399,184.16x = 549,938.40 × 278,106.44
  4. Step 4: Simplify right side
    399,184.16x = 152,941,410,643.30
  5. Step 5: Solve for x
    x = 152,941,410,643.30/399,184.16
  6. Step 6: Final answer
    x = 383,134.97

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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.