Home / 279,752.09-386,047.05-152,428.64

Finding the Fourth Proportional to 279,752.09, 386,047.05 and 152,428.64

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Solution

The fourth proportional to 279,752.09, 386,047.05 and 152,428.64 is: 210,345.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,752.09 : 386,047.05 = 152,428.64 : x
  2. Step 2: Convert to fraction form
    279,752.09/386,047.05 = 152,428.64/x
  3. Step 3: Cross multiply
    279,752.09x = 386,047.05 × 152,428.64
  4. Step 4: Simplify right side
    279,752.09x = 58,844,626,807.51
  5. Step 5: Solve for x
    x = 58,844,626,807.51/279,752.09
  6. Step 6: Final answer
    x = 210,345.62

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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.