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Finding the Fourth Proportional to 489,772.36, 734,323.12 and 249,421

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Solution

The fourth proportional to 489,772.36, 734,323.12 and 249,421 is: 373,960.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,772.36 : 734,323.12 = 249,421 : x
  2. Step 2: Convert to fraction form
    489,772.36/734,323.12 = 249,421/x
  3. Step 3: Cross multiply
    489,772.36x = 734,323.12 × 249,421
  4. Step 4: Simplify right side
    489,772.36x = 183,155,606,913.52
  5. Step 5: Solve for x
    x = 183,155,606,913.52/489,772.36
  6. Step 6: Final answer
    x = 373,960.68

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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.