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Finding the Fourth Proportional to 525,699.40, 788,318.70 and 210,051.40

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Solution

The fourth proportional to 525,699.40, 788,318.70 and 210,051.40 is: 314,985.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,699.40 : 788,318.70 = 210,051.40 : x
  2. Step 2: Convert to fraction form
    525,699.40/788,318.70 = 210,051.40/x
  3. Step 3: Cross multiply
    525,699.40x = 788,318.70 × 210,051.40
  4. Step 4: Simplify right side
    525,699.40x = 165,587,446,581.18
  5. Step 5: Solve for x
    x = 165,587,446,581.18/525,699.40
  6. Step 6: Final answer
    x = 314,985.04

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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.