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Finding the Fourth Proportional to 426,132.64, 587,852.40 and 278,870.32

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Solution

The fourth proportional to 426,132.64, 587,852.40 and 278,870.32 is: 384,703.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,132.64 : 587,852.40 = 278,870.32 : x
  2. Step 2: Convert to fraction form
    426,132.64/587,852.40 = 278,870.32/x
  3. Step 3: Cross multiply
    426,132.64x = 587,852.40 × 278,870.32
  4. Step 4: Simplify right side
    426,132.64x = 163,934,586,900.77
  5. Step 5: Solve for x
    x = 163,934,586,900.77/426,132.64
  6. Step 6: Final answer
    x = 384,703.19

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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.