Home / 287,501.40-396,482.81-227,216.05

Finding the Fourth Proportional to 287,501.40, 396,482.81 and 227,216.05

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Solution

The fourth proportional to 287,501.40, 396,482.81 and 227,216.05 is: 313,345.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,501.40 : 396,482.81 = 227,216.05 : x
  2. Step 2: Convert to fraction form
    287,501.40/396,482.81 = 227,216.05/x
  3. Step 3: Cross multiply
    287,501.40x = 396,482.81 × 227,216.05
  4. Step 4: Simplify right side
    287,501.40x = 90,087,257,981.10
  5. Step 5: Solve for x
    x = 90,087,257,981.10/287,501.40
  6. Step 6: Final answer
    x = 313,345.46

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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.