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Finding the Fourth Proportional to 614,063.84, 921,219.92 and 259,078.72

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Solution

The fourth proportional to 614,063.84, 921,219.92 and 259,078.72 is: 388,670.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,063.84 : 921,219.92 = 259,078.72 : x
  2. Step 2: Convert to fraction form
    614,063.84/921,219.92 = 259,078.72/x
  3. Step 3: Cross multiply
    614,063.84x = 921,219.92 × 259,078.72
  4. Step 4: Simplify right side
    614,063.84x = 238,668,477,712.10
  5. Step 5: Solve for x
    x = 238,668,477,712.10/614,063.84
  6. Step 6: Final answer
    x = 388,670.46

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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.