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Finding the Fourth Proportional to 359,128.58, 537,362.23 and 287,834.98

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Solution

The fourth proportional to 359,128.58, 537,362.23 and 287,834.98 is: 430,685.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,128.58 : 537,362.23 = 287,834.98 : x
  2. Step 2: Convert to fraction form
    359,128.58/537,362.23 = 287,834.98/x
  3. Step 3: Cross multiply
    359,128.58x = 537,362.23 × 287,834.98
  4. Step 4: Simplify right side
    359,128.58x = 154,671,646,724.81
  5. Step 5: Solve for x
    x = 154,671,646,724.81/359,128.58
  6. Step 6: Final answer
    x = 430,685.99

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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.