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Finding the Fourth Proportional to 525,056.40, 788,167.80 and 288,860.40

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Solution

The fourth proportional to 525,056.40, 788,167.80 and 288,860.40 is: 433,611.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,056.40 : 788,167.80 = 288,860.40 : x
  2. Step 2: Convert to fraction form
    525,056.40/788,167.80 = 288,860.40/x
  3. Step 3: Cross multiply
    525,056.40x = 788,167.80 × 288,860.40
  4. Step 4: Simplify right side
    525,056.40x = 227,670,465,975.12
  5. Step 5: Solve for x
    x = 227,670,465,975.12/525,056.40
  6. Step 6: Final answer
    x = 433,611.45

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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.