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Finding the Fourth Proportional to 525,681.30, 788,521.87 and 126,322.08

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Solution

The fourth proportional to 525,681.30, 788,521.87 and 126,322.08 is: 189,483.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,681.30 : 788,521.87 = 126,322.08 : x
  2. Step 2: Convert to fraction form
    525,681.30/788,521.87 = 126,322.08/x
  3. Step 3: Cross multiply
    525,681.30x = 788,521.87 × 126,322.08
  4. Step 4: Simplify right side
    525,681.30x = 99,607,722,743.89
  5. Step 5: Solve for x
    x = 99,607,722,743.89/525,681.30
  6. Step 6: Final answer
    x = 189,483.10

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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.