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Finding the Fourth Proportional to 291,038.69, 436,839.59 and 210,069.19

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Solution

The fourth proportional to 291,038.69, 436,839.59 and 210,069.19 is: 315,307.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,038.69 : 436,839.59 = 210,069.19 : x
  2. Step 2: Convert to fraction form
    291,038.69/436,839.59 = 210,069.19/x
  3. Step 3: Cross multiply
    291,038.69x = 436,839.59 × 210,069.19
  4. Step 4: Simplify right side
    291,038.69x = 91,766,538,720.82
  5. Step 5: Solve for x
    x = 91,766,538,720.82/291,038.69
  6. Step 6: Final answer
    x = 315,307.01

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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.