Home / 390,865,931.10-585,925,648.65-145,156,772.70

Finding the Fourth Proportional to 390,865,931.10, 585,925,648.65 and 145,156,772.70

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Solution

The fourth proportional to 390,865,931.10, 585,925,648.65 and 145,156,772.70 is: 217,596,545.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,865,931.10 : 585,925,648.65 = 145,156,772.70 : x
  2. Step 2: Convert to fraction form
    390,865,931.10/585,925,648.65 = 145,156,772.70/x
  3. Step 3: Cross multiply
    390,865,931.10x = 585,925,648.65 × 145,156,772.70
  4. Step 4: Simplify right side
    390,865,931.10x = 85,051,076,200,188,096
  5. Step 5: Solve for x
    x = 85,051,076,200,188,096/390,865,931.10
  6. Step 6: Final answer
    x = 217,596,545.09

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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.