Home / 282,710.66-390,135.69-155,386.22

Finding the Fourth Proportional to 282,710.66, 390,135.69 and 155,386.22

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Solution

The fourth proportional to 282,710.66, 390,135.69 and 155,386.22 is: 214,430.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,710.66 : 390,135.69 = 155,386.22 : x
  2. Step 2: Convert to fraction form
    282,710.66/390,135.69 = 155,386.22/x
  3. Step 3: Cross multiply
    282,710.66x = 390,135.69 × 155,386.22
  4. Step 4: Simplify right side
    282,710.66x = 60,621,708,205.51
  5. Step 5: Solve for x
    x = 60,621,708,205.51/282,710.66
  6. Step 6: Final answer
    x = 214,430.22

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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.