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Finding the Fourth Proportional to 604,743.40, 907,211.10 and 205,421.80

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Solution

The fourth proportional to 604,743.40, 907,211.10 and 205,421.80 is: 308,165.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,743.40 : 907,211.10 = 205,421.80 : x
  2. Step 2: Convert to fraction form
    604,743.40/907,211.10 = 205,421.80/x
  3. Step 3: Cross multiply
    604,743.40x = 907,211.10 × 205,421.80
  4. Step 4: Simplify right side
    604,743.40x = 186,360,937,141.98
  5. Step 5: Solve for x
    x = 186,360,937,141.98/604,743.40
  6. Step 6: Final answer
    x = 308,165.31

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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.