Home / 282,970.14-390,490.63-155,645.73

Finding the Fourth Proportional to 282,970.14, 390,490.63 and 155,645.73

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Solution

The fourth proportional to 282,970.14, 390,490.63 and 155,645.73 is: 214,786.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,970.14 : 390,490.63 = 155,645.73 : x
  2. Step 2: Convert to fraction form
    282,970.14/390,490.63 = 155,645.73/x
  3. Step 3: Cross multiply
    282,970.14x = 390,490.63 × 155,645.73
  4. Step 4: Simplify right side
    282,970.14x = 60,778,199,164.51
  5. Step 5: Solve for x
    x = 60,778,199,164.51/282,970.14
  6. Step 6: Final answer
    x = 214,786.62

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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.