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Finding the Fourth Proportional to 262,328.61, 393,448.90 and 72,808.23

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Solution

The fourth proportional to 262,328.61, 393,448.90 and 72,808.23 is: 109,200.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,328.61 : 393,448.90 = 72,808.23 : x
  2. Step 2: Convert to fraction form
    262,328.61/393,448.90 = 72,808.23/x
  3. Step 3: Cross multiply
    262,328.61x = 393,448.90 × 72,808.23
  4. Step 4: Simplify right side
    262,328.61x = 28,646,319,028.79
  5. Step 5: Solve for x
    x = 28,646,319,028.79/262,328.61
  6. Step 6: Final answer
    x = 109,200.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.