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Finding the Fourth Proportional to 245,339,368.40, 367,696,457.40 and 130,378,984.40

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Solution

The fourth proportional to 245,339,368.40, 367,696,457.40 and 130,378,984.40 is: 195,402,356.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,339,368.40 : 367,696,457.40 = 130,378,984.40 : x
  2. Step 2: Convert to fraction form
    245,339,368.40/367,696,457.40 = 130,378,984.40/x
  3. Step 3: Cross multiply
    245,339,368.40x = 367,696,457.40 × 130,378,984.40
  4. Step 4: Simplify right side
    245,339,368.40x = 47,939,890,683,289,864
  5. Step 5: Solve for x
    x = 47,939,890,683,289,864/245,339,368.40
  6. Step 6: Final answer
    x = 195,402,356.32

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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.