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Finding the Fourth Proportional to 453,638.48, 626,045.64 and 252,438.80

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Solution

The fourth proportional to 453,638.48, 626,045.64 and 252,438.80 is: 348,379.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,638.48 : 626,045.64 = 252,438.80 : x
  2. Step 2: Convert to fraction form
    453,638.48/626,045.64 = 252,438.80/x
  3. Step 3: Cross multiply
    453,638.48x = 626,045.64 × 252,438.80
  4. Step 4: Simplify right side
    453,638.48x = 158,038,210,106.83
  5. Step 5: Solve for x
    x = 158,038,210,106.83/453,638.48
  6. Step 6: Final answer
    x = 348,379.20

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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.