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Finding the Fourth Proportional to 425,762.19, 638,457.80 and 122,089.34

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Solution

The fourth proportional to 425,762.19, 638,457.80 and 122,089.34 is: 183,080.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,762.19 : 638,457.80 = 122,089.34 : x
  2. Step 2: Convert to fraction form
    425,762.19/638,457.80 = 122,089.34/x
  3. Step 3: Cross multiply
    425,762.19x = 638,457.80 × 122,089.34
  4. Step 4: Simplify right side
    425,762.19x = 77,948,892,405.55
  5. Step 5: Solve for x
    x = 77,948,892,405.55/425,762.19
  6. Step 6: Final answer
    x = 183,080.82

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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.