Home / 399,179.16-549,931.50-278,101.44

Finding the Fourth Proportional to 399,179.16, 549,931.50 and 278,101.44

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Solution

The fourth proportional to 399,179.16, 549,931.50 and 278,101.44 is: 383,128.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,179.16 : 549,931.50 = 278,101.44 : x
  2. Step 2: Convert to fraction form
    399,179.16/549,931.50 = 278,101.44/x
  3. Step 3: Cross multiply
    399,179.16x = 549,931.50 × 278,101.44
  4. Step 4: Simplify right side
    399,179.16x = 152,936,742,051.36
  5. Step 5: Solve for x
    x = 152,936,742,051.36/399,179.16
  6. Step 6: Final answer
    x = 383,128.07

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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.