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Finding the Fourth Proportional to 450,421.80, 621,520.80 and 269,095.32

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Solution

The fourth proportional to 450,421.80, 621,520.80 and 269,095.32 is: 371,314.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,421.80 : 621,520.80 = 269,095.32 : x
  2. Step 2: Convert to fraction form
    450,421.80/621,520.80 = 269,095.32/x
  3. Step 3: Cross multiply
    450,421.80x = 621,520.80 × 269,095.32
  4. Step 4: Simplify right side
    450,421.80x = 167,248,338,562.66
  5. Step 5: Solve for x
    x = 167,248,338,562.66/450,421.80
  6. Step 6: Final answer
    x = 371,314.93

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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.