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Finding the Fourth Proportional to 292,814.40, 439,243.20 and 105,801.60

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Solution

The fourth proportional to 292,814.40, 439,243.20 and 105,801.60 is: 158,710.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,814.40 : 439,243.20 = 105,801.60 : x
  2. Step 2: Convert to fraction form
    292,814.40/439,243.20 = 105,801.60/x
  3. Step 3: Cross multiply
    292,814.40x = 439,243.20 × 105,801.60
  4. Step 4: Simplify right side
    292,814.40x = 46,472,633,349.12
  5. Step 5: Solve for x
    x = 46,472,633,349.12/292,814.40
  6. Step 6: Final answer
    x = 158,710.20

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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.