Home / 369,966.20-555,095.10-145,288.40

Finding the Fourth Proportional to 369,966.20, 555,095.10 and 145,288.40

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Solution

The fourth proportional to 369,966.20, 555,095.10 and 145,288.40 is: 217,989.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,966.20 : 555,095.10 = 145,288.40 : x
  2. Step 2: Convert to fraction form
    369,966.20/555,095.10 = 145,288.40/x
  3. Step 3: Cross multiply
    369,966.20x = 555,095.10 × 145,288.40
  4. Step 4: Simplify right side
    369,966.20x = 80,648,878,926.84
  5. Step 5: Solve for x
    x = 80,648,878,926.84/369,966.20
  6. Step 6: Final answer
    x = 217,989.86

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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.