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Finding the Fourth Proportional to 455,098.58, 626,559.90 and 358,131.50

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Solution

The fourth proportional to 455,098.58, 626,559.90 and 358,131.50 is: 493,059.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,098.58 : 626,559.90 = 358,131.50 : x
  2. Step 2: Convert to fraction form
    455,098.58/626,559.90 = 358,131.50/x
  3. Step 3: Cross multiply
    455,098.58x = 626,559.90 × 358,131.50
  4. Step 4: Simplify right side
    455,098.58x = 224,390,836,826.85
  5. Step 5: Solve for x
    x = 224,390,836,826.85/455,098.58
  6. Step 6: Final answer
    x = 493,059.85

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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.