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Finding the Fourth Proportional to 419,521.60, 578,712.36 and 249,722.92

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Solution

The fourth proportional to 419,521.60, 578,712.36 and 249,722.92 is: 344,482.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,521.60 : 578,712.36 = 249,722.92 : x
  2. Step 2: Convert to fraction form
    419,521.60/578,712.36 = 249,722.92/x
  3. Step 3: Cross multiply
    419,521.60x = 578,712.36 × 249,722.92
  4. Step 4: Simplify right side
    419,521.60x = 144,517,740,379.29
  5. Step 5: Solve for x
    x = 144,517,740,379.29/419,521.60
  6. Step 6: Final answer
    x = 344,482.24

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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.