Home / 315,276.72-473,129.28-128,322.24

Finding the Fourth Proportional to 315,276.72, 473,129.28 and 128,322.24

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Solution

The fourth proportional to 315,276.72, 473,129.28 and 128,322.24 is: 192,570.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,276.72 : 473,129.28 = 128,322.24 : x
  2. Step 2: Convert to fraction form
    315,276.72/473,129.28 = 128,322.24/x
  3. Step 3: Cross multiply
    315,276.72x = 473,129.28 × 128,322.24
  4. Step 4: Simplify right side
    315,276.72x = 60,713,009,019.19
  5. Step 5: Solve for x
    x = 60,713,009,019.19/315,276.72
  6. Step 6: Final answer
    x = 192,570.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.