Home / 382,805,159.76-528,201,437.40-215,515,406.16

Finding the Fourth Proportional to 382,805,159.76, 528,201,437.40 and 215,515,406.16

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Solution

The fourth proportional to 382,805,159.76, 528,201,437.40 and 215,515,406.16 is: 297,372,029.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,805,159.76 : 528,201,437.40 = 215,515,406.16 : x
  2. Step 2: Convert to fraction form
    382,805,159.76/528,201,437.40 = 215,515,406.16/x
  3. Step 3: Cross multiply
    382,805,159.76x = 528,201,437.40 × 215,515,406.16
  4. Step 4: Simplify right side
    382,805,159.76x = 113,835,547,315,556,800
  5. Step 5: Solve for x
    x = 113,835,547,315,556,800/382,805,159.76
  6. Step 6: Final answer
    x = 297,372,029.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.