Home / 312,516,698.85-468,729,417.74-91,128,547.80

Finding the Fourth Proportional to 312,516,698.85, 468,729,417.74 and 91,128,547.80

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Solution

The fourth proportional to 312,516,698.85, 468,729,417.74 and 91,128,547.80 is: 136,679,516.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,516,698.85 : 468,729,417.74 = 91,128,547.80 : x
  2. Step 2: Convert to fraction form
    312,516,698.85/468,729,417.74 = 91,128,547.80/x
  3. Step 3: Cross multiply
    312,516,698.85x = 468,729,417.74 × 91,128,547.80
  4. Step 4: Simplify right side
    312,516,698.85x = 42,714,631,149,330,112
  5. Step 5: Solve for x
    x = 42,714,631,149,330,112/312,516,698.85
  6. Step 6: Final answer
    x = 136,679,516.03

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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.