Home / 315,795.20-473,462.40-128,710.40

Finding the Fourth Proportional to 315,795.20, 473,462.40 and 128,710.40

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Solution

The fourth proportional to 315,795.20, 473,462.40 and 128,710.40 is: 192,971.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,795.20 : 473,462.40 = 128,710.40 : x
  2. Step 2: Convert to fraction form
    315,795.20/473,462.40 = 128,710.40/x
  3. Step 3: Cross multiply
    315,795.20x = 473,462.40 × 128,710.40
  4. Step 4: Simplify right side
    315,795.20x = 60,939,534,888.96
  5. Step 5: Solve for x
    x = 60,939,534,888.96/315,795.20
  6. Step 6: Final answer
    x = 192,971.69

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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.