Home / 390,382,066.35-585,574,468.16-99,249,220.49

Finding the Fourth Proportional to 390,382,066.35, 585,574,468.16 and 99,249,220.49

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Solution

The fourth proportional to 390,382,066.35, 585,574,468.16 and 99,249,220.49 is: 148,874,178.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,382,066.35 : 585,574,468.16 = 99,249,220.49 : x
  2. Step 2: Convert to fraction form
    390,382,066.35/585,574,468.16 = 99,249,220.49/x
  3. Step 3: Cross multiply
    390,382,066.35x = 585,574,468.16 × 99,249,220.49
  4. Step 4: Simplify right side
    390,382,066.35x = 58,117,809,500,302,200
  5. Step 5: Solve for x
    x = 58,117,809,500,302,200/390,382,066.35
  6. Step 6: Final answer
    x = 148,874,178.68

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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.