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Finding the Fourth Proportional to 240,243.16, 360,582.11 and 128,018.20

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Solution

The fourth proportional to 240,243.16, 360,582.11 and 128,018.20 is: 192,143.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,243.16 : 360,582.11 = 128,018.20 : x
  2. Step 2: Convert to fraction form
    240,243.16/360,582.11 = 128,018.20/x
  3. Step 3: Cross multiply
    240,243.16x = 360,582.11 × 128,018.20
  4. Step 4: Simplify right side
    240,243.16x = 46,161,072,674.40
  5. Step 5: Solve for x
    x = 46,161,072,674.40/240,243.16
  6. Step 6: Final answer
    x = 192,143.13

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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.