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Finding the Fourth Proportional to 472,713.94, 709,070.55 and 140,289.94

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Solution

The fourth proportional to 472,713.94, 709,070.55 and 140,289.94 is: 210,434.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,713.94 : 709,070.55 = 140,289.94 : x
  2. Step 2: Convert to fraction form
    472,713.94/709,070.55 = 140,289.94/x
  3. Step 3: Cross multiply
    472,713.94x = 709,070.55 × 140,289.94
  4. Step 4: Simplify right side
    472,713.94x = 99,475,464,915.27
  5. Step 5: Solve for x
    x = 99,475,464,915.27/472,713.94
  6. Step 6: Final answer
    x = 210,434.80

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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.