Home / 225,018.02-310,513.95-128,244.53

Finding the Fourth Proportional to 225,018.02, 310,513.95 and 128,244.53

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Solution

The fourth proportional to 225,018.02, 310,513.95 and 128,244.53 is: 176,971.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,018.02 : 310,513.95 = 128,244.53 : x
  2. Step 2: Convert to fraction form
    225,018.02/310,513.95 = 128,244.53/x
  3. Step 3: Cross multiply
    225,018.02x = 310,513.95 × 128,244.53
  4. Step 4: Simplify right side
    225,018.02x = 39,821,715,576.19
  5. Step 5: Solve for x
    x = 39,821,715,576.19/225,018.02
  6. Step 6: Final answer
    x = 176,971.23

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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.