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Finding the Fourth Proportional to 178,679,920.40, 249,641,705.20 and 178,679,920.40

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Solution

The fourth proportional to 178,679,920.40, 249,641,705.20 and 178,679,920.40 is: 249,641,705.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,679,920.40 : 249,641,705.20 = 178,679,920.40 : x
  2. Step 2: Convert to fraction form
    178,679,920.40/249,641,705.20 = 178,679,920.40/x
  3. Step 3: Cross multiply
    178,679,920.40x = 249,641,705.20 × 178,679,920.40
  4. Step 4: Simplify right side
    178,679,920.40x = 44,605,960,013,656,264
  5. Step 5: Solve for x
    x = 44,605,960,013,656,264/178,679,920.40
  6. Step 6: Final answer
    x = 249,641,705.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.