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Finding the Fourth Proportional to 402,523.66, 555,483.81 and 221,254.16

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Solution

The fourth proportional to 402,523.66, 555,483.81 and 221,254.16 is: 305,331.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,523.66 : 555,483.81 = 221,254.16 : x
  2. Step 2: Convert to fraction form
    402,523.66/555,483.81 = 221,254.16/x
  3. Step 3: Cross multiply
    402,523.66x = 555,483.81 × 221,254.16
  4. Step 4: Simplify right side
    402,523.66x = 122,903,103,775.15
  5. Step 5: Solve for x
    x = 122,903,103,775.15/402,523.66
  6. Step 6: Final answer
    x = 305,331.38

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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.