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Finding the Fourth Proportional to 407,440.40, 609,994.20 and 249,976.40

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Solution

The fourth proportional to 407,440.40, 609,994.20 and 249,976.40 is: 374,248.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,440.40 : 609,994.20 = 249,976.40 : x
  2. Step 2: Convert to fraction form
    407,440.40/609,994.20 = 249,976.40/x
  3. Step 3: Cross multiply
    407,440.40x = 609,994.20 × 249,976.40
  4. Step 4: Simplify right side
    407,440.40x = 152,484,154,136.88
  5. Step 5: Solve for x
    x = 152,484,154,136.88/407,440.40
  6. Step 6: Final answer
    x = 374,248.98

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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.