Home / 369,025.04-509,260.20-218,136.08

Finding the Fourth Proportional to 369,025.04, 509,260.20 and 218,136.08

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Solution

The fourth proportional to 369,025.04, 509,260.20 and 218,136.08 is: 301,031.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,025.04 : 509,260.20 = 218,136.08 : x
  2. Step 2: Convert to fraction form
    369,025.04/509,260.20 = 218,136.08/x
  3. Step 3: Cross multiply
    369,025.04x = 509,260.20 × 218,136.08
  4. Step 4: Simplify right side
    369,025.04x = 111,088,023,728.02
  5. Step 5: Solve for x
    x = 111,088,023,728.02/369,025.04
  6. Step 6: Final answer
    x = 301,031.13

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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.