Home / 402,919.04-556,041.51-221,644.91

Finding the Fourth Proportional to 402,919.04, 556,041.51 and 221,644.91

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Solution

The fourth proportional to 402,919.04, 556,041.51 and 221,644.91 is: 305,877.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,919.04 : 556,041.51 = 221,644.91 : x
  2. Step 2: Convert to fraction form
    402,919.04/556,041.51 = 221,644.91/x
  3. Step 3: Cross multiply
    402,919.04x = 556,041.51 × 221,644.91
  4. Step 4: Simplify right side
    402,919.04x = 123,243,767,660.01
  5. Step 5: Solve for x
    x = 123,243,767,660.01/402,919.04
  6. Step 6: Final answer
    x = 305,877.25

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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.