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Finding the Fourth Proportional to 283,510.40, 424,281.45 and 259,890.80

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Solution

The fourth proportional to 283,510.40, 424,281.45 and 259,890.80 is: 388,934.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,510.40 : 424,281.45 = 259,890.80 : x
  2. Step 2: Convert to fraction form
    283,510.40/424,281.45 = 259,890.80/x
  3. Step 3: Cross multiply
    283,510.40x = 424,281.45 × 259,890.80
  4. Step 4: Simplify right side
    283,510.40x = 110,266,845,465.66
  5. Step 5: Solve for x
    x = 110,266,845,465.66/283,510.40
  6. Step 6: Final answer
    x = 388,934.04

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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.