Home / 319,030.73-439,923.85-286,898.23

Finding the Fourth Proportional to 319,030.73, 439,923.85 and 286,898.23

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Solution

The fourth proportional to 319,030.73, 439,923.85 and 286,898.23 is: 395,615.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,030.73 : 439,923.85 = 286,898.23 : x
  2. Step 2: Convert to fraction form
    319,030.73/439,923.85 = 286,898.23/x
  3. Step 3: Cross multiply
    319,030.73x = 439,923.85 × 286,898.23
  4. Step 4: Simplify right side
    319,030.73x = 126,213,373,732.45
  5. Step 5: Solve for x
    x = 126,213,373,732.45/319,030.73
  6. Step 6: Final answer
    x = 395,615.10

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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.