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Finding the Fourth Proportional to 342,328.99, 472,254.96 and 221,509.24

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Solution

The fourth proportional to 342,328.99, 472,254.96 and 221,509.24 is: 305,579.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,328.99 : 472,254.96 = 221,509.24 : x
  2. Step 2: Convert to fraction form
    342,328.99/472,254.96 = 221,509.24/x
  3. Step 3: Cross multiply
    342,328.99x = 472,254.96 × 221,509.24
  4. Step 4: Simplify right side
    342,328.99x = 104,608,837,275.83
  5. Step 5: Solve for x
    x = 104,608,837,275.83/342,328.99
  6. Step 6: Final answer
    x = 305,579.84

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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.