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Finding the Fourth Proportional to 262,014.80, 392,950.20 and 72,430.16

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Solution

The fourth proportional to 262,014.80, 392,950.20 and 72,430.16 is: 108,625.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,014.80 : 392,950.20 = 72,430.16 : x
  2. Step 2: Convert to fraction form
    262,014.80/392,950.20 = 72,430.16/x
  3. Step 3: Cross multiply
    262,014.80x = 392,950.20 × 72,430.16
  4. Step 4: Simplify right side
    262,014.80x = 28,461,445,858.03
  5. Step 5: Solve for x
    x = 28,461,445,858.03/262,014.80
  6. Step 6: Final answer
    x = 108,625.34

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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.