Home / 278,323,967.52-384,153,968.72-159,315,547.28

Finding the Fourth Proportional to 278,323,967.52, 384,153,968.72 and 159,315,547.28

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Solution

The fourth proportional to 278,323,967.52, 384,153,968.72 and 159,315,547.28 is: 219,893,745.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,323,967.52 : 384,153,968.72 = 159,315,547.28 : x
  2. Step 2: Convert to fraction form
    278,323,967.52/384,153,968.72 = 159,315,547.28/x
  3. Step 3: Cross multiply
    278,323,967.52x = 384,153,968.72 × 159,315,547.28
  4. Step 4: Simplify right side
    278,323,967.52x = 61,201,699,764,888,328
  5. Step 5: Solve for x
    x = 61,201,699,764,888,328/278,323,967.52
  6. Step 6: Final answer
    x = 219,893,745.80

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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.