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Finding the Fourth Proportional to 489,031.80, 733,547.70 and 208,577.40

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Solution

The fourth proportional to 489,031.80, 733,547.70 and 208,577.40 is: 312,866.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,031.80 : 733,547.70 = 208,577.40 : x
  2. Step 2: Convert to fraction form
    489,031.80/733,547.70 = 208,577.40/x
  3. Step 3: Cross multiply
    489,031.80x = 733,547.70 × 208,577.40
  4. Step 4: Simplify right side
    489,031.80x = 153,001,472,041.98
  5. Step 5: Solve for x
    x = 153,001,472,041.98/489,031.80
  6. Step 6: Final answer
    x = 312,866.10

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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.