Home / 438,359.40-657,539.10-142,871.40

Finding the Fourth Proportional to 438,359.40, 657,539.10 and 142,871.40

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Solution

The fourth proportional to 438,359.40, 657,539.10 and 142,871.40 is: 214,307.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,359.40 : 657,539.10 = 142,871.40 : x
  2. Step 2: Convert to fraction form
    438,359.40/657,539.10 = 142,871.40/x
  3. Step 3: Cross multiply
    438,359.40x = 657,539.10 × 142,871.40
  4. Step 4: Simplify right side
    438,359.40x = 93,943,531,771.74
  5. Step 5: Solve for x
    x = 93,943,531,771.74/438,359.40
  6. Step 6: Final answer
    x = 214,307.10

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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.