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Finding the Fourth Proportional to 429,249,911.60, 643,909,859.40 and 183,608,404.40

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Solution

The fourth proportional to 429,249,911.60, 643,909,859.40 and 183,608,404.40 is: 275,427,574.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,249,911.60 : 643,909,859.40 = 183,608,404.40 : x
  2. Step 2: Convert to fraction form
    429,249,911.60/643,909,859.40 = 183,608,404.40/x
  3. Step 3: Cross multiply
    429,249,911.60x = 643,909,859.40 × 183,608,404.40
  4. Step 4: Simplify right side
    429,249,911.60x = 118,227,261,861,862,336
  5. Step 5: Solve for x
    x = 118,227,261,861,862,336/429,249,911.60
  6. Step 6: Final answer
    x = 275,427,574.16

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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.