Home / 282,628.32-390,022.70-155,301.18

Finding the Fourth Proportional to 282,628.32, 390,022.70 and 155,301.18

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Solution

The fourth proportional to 282,628.32, 390,022.70 and 155,301.18 is: 214,313.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,628.32 : 390,022.70 = 155,301.18 : x
  2. Step 2: Convert to fraction form
    282,628.32/390,022.70 = 155,301.18/x
  3. Step 3: Cross multiply
    282,628.32x = 390,022.70 × 155,301.18
  4. Step 4: Simplify right side
    282,628.32x = 60,570,985,536.79
  5. Step 5: Solve for x
    x = 60,570,985,536.79/282,628.32
  6. Step 6: Final answer
    x = 214,313.22

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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.