Home / 397,933.02-549,640.69-288,863.28

Finding the Fourth Proportional to 397,933.02, 549,640.69 and 288,863.28

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Solution

The fourth proportional to 397,933.02, 549,640.69 and 288,863.28 is: 398,989.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,933.02 : 549,640.69 = 288,863.28 : x
  2. Step 2: Convert to fraction form
    397,933.02/549,640.69 = 288,863.28/x
  3. Step 3: Cross multiply
    397,933.02x = 549,640.69 × 288,863.28
  4. Step 4: Simplify right side
    397,933.02x = 158,771,011,812.71
  5. Step 5: Solve for x
    x = 158,771,011,812.71/397,933.02
  6. Step 6: Final answer
    x = 398,989.29

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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.