Home / 282,955.37-390,363.21-160,421.92

Finding the Fourth Proportional to 282,955.37, 390,363.21 and 160,421.92

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Solution

The fourth proportional to 282,955.37, 390,363.21 and 160,421.92 is: 221,316.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,955.37 : 390,363.21 = 160,421.92 : x
  2. Step 2: Convert to fraction form
    282,955.37/390,363.21 = 160,421.92/x
  3. Step 3: Cross multiply
    282,955.37x = 390,363.21 × 160,421.92
  4. Step 4: Simplify right side
    282,955.37x = 62,622,814,895.25
  5. Step 5: Solve for x
    x = 62,622,814,895.25/282,955.37
  6. Step 6: Final answer
    x = 221,316.93

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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.