Home / 283,047.64-390,605.73-155,720.50

Finding the Fourth Proportional to 283,047.64, 390,605.73 and 155,720.50

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Solution

The fourth proportional to 283,047.64, 390,605.73 and 155,720.50 is: 214,894.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,047.64 : 390,605.73 = 155,720.50 : x
  2. Step 2: Convert to fraction form
    283,047.64/390,605.73 = 155,720.50/x
  3. Step 3: Cross multiply
    283,047.64x = 390,605.73 × 155,720.50
  4. Step 4: Simplify right side
    283,047.64x = 60,825,319,578.47
  5. Step 5: Solve for x
    x = 60,825,319,578.47/283,047.64
  6. Step 6: Final answer
    x = 214,894.28

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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.