Home / 521,900.20-720,210.08-307,054.10

Finding the Fourth Proportional to 521,900.20, 720,210.08 and 307,054.10

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Solution

The fourth proportional to 521,900.20, 720,210.08 and 307,054.10 is: 423,727.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,900.20 : 720,210.08 = 307,054.10 : x
  2. Step 2: Convert to fraction form
    521,900.20/720,210.08 = 307,054.10/x
  3. Step 3: Cross multiply
    521,900.20x = 720,210.08 × 307,054.10
  4. Step 4: Simplify right side
    521,900.20x = 221,143,457,925.33
  5. Step 5: Solve for x
    x = 221,143,457,925.33/521,900.20
  6. Step 6: Final answer
    x = 423,727.48

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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.