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Finding the Fourth Proportional to 257,651,430.80, 386,178,547.80 and 104,221,619.60

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Solution

The fourth proportional to 257,651,430.80, 386,178,547.80 and 104,221,619.60 is: 156,211,644.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,651,430.80 : 386,178,547.80 = 104,221,619.60 : x
  2. Step 2: Convert to fraction form
    257,651,430.80/386,178,547.80 = 104,221,619.60/x
  3. Step 3: Cross multiply
    257,651,430.80x = 386,178,547.80 × 104,221,619.60
  4. Step 4: Simplify right side
    257,651,430.80x = 40,248,153,706,492,016
  5. Step 5: Solve for x
    x = 40,248,153,706,492,016/257,651,430.80
  6. Step 6: Final answer
    x = 156,211,644.47

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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.