Home / 282,756.15-390,193.58-155,430.83

Finding the Fourth Proportional to 282,756.15, 390,193.58 and 155,430.83

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Solution

The fourth proportional to 282,756.15, 390,193.58 and 155,430.83 is: 214,489.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,756.15 : 390,193.58 = 155,430.83 : x
  2. Step 2: Convert to fraction form
    282,756.15/390,193.58 = 155,430.83/x
  3. Step 3: Cross multiply
    282,756.15x = 390,193.58 × 155,430.83
  4. Step 4: Simplify right side
    282,756.15x = 60,648,109,271.95
  5. Step 5: Solve for x
    x = 60,648,109,271.95/282,756.15
  6. Step 6: Final answer
    x = 214,489.09

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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.