Home / 402,475.68-555,416.04-221,199.24

Finding the Fourth Proportional to 402,475.68, 555,416.04 and 221,199.24

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Solution

The fourth proportional to 402,475.68, 555,416.04 and 221,199.24 is: 305,254.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,475.68 : 555,416.04 = 221,199.24 : x
  2. Step 2: Convert to fraction form
    402,475.68/555,416.04 = 221,199.24/x
  3. Step 3: Cross multiply
    402,475.68x = 555,416.04 × 221,199.24
  4. Step 4: Simplify right side
    402,475.68x = 122,857,605,931.81
  5. Step 5: Solve for x
    x = 122,857,605,931.81/402,475.68
  6. Step 6: Final answer
    x = 305,254.73

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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.