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Finding the Fourth Proportional to 490,615,139.06, 736,249,975.20 and 254,482,288.70

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Solution

The fourth proportional to 490,615,139.06, 736,249,975.20 and 254,482,288.70 is: 381,893,186.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,615,139.06 : 736,249,975.20 = 254,482,288.70 : x
  2. Step 2: Convert to fraction form
    490,615,139.06/736,249,975.20 = 254,482,288.70/x
  3. Step 3: Cross multiply
    490,615,139.06x = 736,249,975.20 × 254,482,288.70
  4. Step 4: Simplify right side
    490,615,139.06x = 187,362,578,744,214,240
  5. Step 5: Solve for x
    x = 187,362,578,744,214,240/490,615,139.06
  6. Step 6: Final answer
    x = 381,893,186.38

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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.